HomeMy WebLinkAboutAGENDA REPORT 2008 0903 CC REG ITEM 10Jr 4 10.
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City, Council Meetinq
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MOORPARK CITY COUNCIL BY�_L*fh.
AGENDA REPORT
TO: Honorable City Council
FROM: Yugal K. Lail, City Engineer /Public Works Director
Prepared by: Dave Klotzle, Assistant City Enginee
DATE: August 22, 2008 (CC Meeting of 09/03/08)
SUBJECT: Consider Approval of Intersection Modifications for Dual Left -Turn
Lanes from Southbound Spring Road to Eastbound Los Angeles
Avenue (SR -118) — Project 8026
BACKGROUND
The City's current Capital Improvement Program adopted by City Council includes Project
No. 8026 — Spring Road Widening. The overall project scope includes widening the east
side of Spring Road between Los Angeles Avenue and Flinn Avenue, and related
intersection improvements at Spring Road and Los Angeles Avenue. Construction of
these widening improvements cannot occur until the related environmental document and
right -of -way acquisitions for the Los Angeles Avenue widening improvements from
Moorpark Avenue to Spring Road are completed. However, the existing width of Spring
Road is sufficient to accommodate the intersection striping modifications to provide dual
left -turn lanes from southbound Spring Road to eastbound Los Angeles Avenue prior to
construction of the overall Spring Road widening improvements.
DISCUSSION
With the recent opening of Spring Road between Walnut Canyon Road and Charles
Street, the volume of traffic turning left from southbound Spring Road onto eastbound Los
Angeles Avenue has increased. It is estimated that sixty percent of traffic traveling
southbound on Walnut Canyon Road (SR 23) turns left at the new signalized intersection
onto Spring Road. The majority of this traffic continues south on Spring Road and then
utilizes the single left -turn lane at Los Angeles Avenue to access the shopping and dining
areas as well as the 23 and 118 Freeways.
: \Public Works \Everyone \Reports \Staff Reports\2008 \September \Spring Rd. Dual Left Plan Approval.doc 4 6 �'�'
Honorable City Council
September 3, 2008
Page 2
The City's traffic engineering consultant, Hartzog and Crabill, Inc., was retained to
perform a traffic analysis of the subject intersection. The analysis found that the volume
of traffic warrants the addition of a second southbound left -turn lane. Vehicles using the
single left -turn lane often stack up into the through lane causing increased congestion.
Currently, approximately 8 to 18 vehicles can make the turn on one cycle of the protected
left -turn signal during periods of peak traffic volumes, depending on the volume of traffic,
vehicle size and driver response time. Modifying the intersection to include dual -left turns
will roughly double the number of vehicles able to turn during one cycle of the left -turn
signal.
Hartzog & Crabill, Inc. has prepared a construction plan for the dual left -turn lanes (Exhibit
A). The modifications will not impact the shopping center driveway beyond the existing
conditions. Staff submitted the plan and traffic analysis to Caltrans for an encroachment
permit since the project is on State Route 118. Caltrans has approved the plans and
issued an encroachment permit. A copy of the construction plan has been placed on top
of the file cabinet in the City Council Conference Room.
This project is statutorily exempt from the California Environmental Quality Act (CEQA)
under Public Resources Code, Division 13, Section 21080.19.
Upon approval of the project by City Council, staff will obtain informal bids and prepare an
agreement for construction of the intersection modifications.
PROJECT APPROVAL — DESIGN IMMUNITY
City Council approval of the scope and design of the project is required for the purpose of
establishing design immunity pursuant to Section 830.6 of the Government Code of the
State of California.
FISCAL IMPACT
The proposed modifications are estimated to cost $15,000. Funding for this project is
from Fund 2501 — L.A. Avenue A.O.C., and is included as a portion of Project 8026 in the
FY 2008/09 Capital Improvements Budget adopted by City Council.
STAFF RECOMMENDATION
Approve the subject project and authorize the City Manager to execute an agreement
for construction.
Attachment
Exhibit A
SAPublic Works \Everyone \Reports \Staff Reports\2008 \September \Spring Rd. Dual Left Plan Approval.doc J'.,p ,
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